#!/usr/bin/env node

const Dog = require('./02-dog.js');
const taidi = new Dog('taidi',4),
      zangao= new Dog('zangao',6);
taidi.on('bark',onBark);
zangao.on('bark',onBark);
function onBark(){
  console.log(`name:${this.name},energy:${this.energy}`)
}
